Scientists aboard NOAA’s Okeanos Explorer used a submersible robot to explore an underwater volcanic ridge near the Portuguese mainland in the northern Azores. To their surprise, there were dozens of rows of small holes with an abnormal distribution about 2.5 kilometers below the sea surface. About a week later, scientists discovered four other sets of holes 483 kilometers away and 1.6 kilometers deep.


↑Mysterious little hole discovered by diving robot
While the holes appear almost man-made, the small piles of sediment around them suggest otherwise, the statement said. “We tried to see what was going on in the cave, but unfortunately there were no suitable tools on the submersible robot.”
This isn’t the first time scientists have seen such a hole. It is reported that as early as 2004, NOAA researchers saw the same cave in the same area. The holes are called “lebensspuren”, which means “traces of life” in German.

↑ diving robot
Although the origin and method of construction of the holes are unclear, the researchers say they speculate that they may have been left by digging and removal by organisms living in the sediment. On a recent expedition, researchers used a submersible to take sediment samples from around the cave to see if there was any life inside.

↑Photos posted by NOAA on social media
The NOAA Ocean Expedition Research Team released photos of these mysterious holes on social media on the 26th, and encouraged the majority of netizens to express their opinions. This interesting challenge has attracted many responses. Some netizens ridiculed: “These holes are like perforated lines, probably to make the seabed easier to separate…” Some netizens commented that these holes may be traces left by aliens. Some netizens believe that this may also be the site of an ancient civilization.
It is reported that starting in May 2022, NOAA has launched the “Voyage to Ridge 2022” mission to conduct a series of marine explorations to explore the Charlie-Gibbs fault zone in the Atlantic Ocean, the Mid-Atlantic Ridge and the Azores Plateau and other human beings Little is known about deep water areas. The mission is expected to end in September.



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